key not found: _PYSPARK_DRIVER_CALLBACK_HOST

java util nosuchelementexception key not found
pyspark version
exception: java gateway process exited before sending its port number
java util nosuchelementexception key not found scala
spark download
install pyspark

I'm trying to run this code:

import pyspark
from pyspark.sql import SparkSession

spark = SparkSession.builder \
        .master("local") \
        .appName("Word Count") \
        .getOrCreate()

df = spark.createDataFrame([
    (1, 144.5, 5.9, 33, 'M'),
    (2, 167.2, 5.4, 45, 'M'),
    (3, 124.1, 5.2, 23, 'F'),
    (4, 144.5, 5.9, 33, 'M'),
    (5, 133.2, 5.7, 54, 'F'),
    (3, 124.1, 5.2, 23, 'F'),
    (5, 129.2, 5.3, 42, 'M'),
   ], ['id', 'weight', 'height', 'age', 'gender'])

df.show()
print('Count of Rows: {0}'.format(df.count()))
print('Count of distinct Rows: {0}'.format((df.distinct().count())))

spark.stop()

And getting an error

18/06/22 11:58:39 ERROR SparkUncaughtExceptionHandler: Uncaught exception in thread Thread[main,5,main]
java.util.NoSuchElementException: key not found: _PYSPARK_DRIVER_CALLBACK_HOST
    ...
Exception: Java gateway process exited before sending its port number

I'm using PyCharm and MacOS, Python 3.6, Spark 2.3.1

What is the possible reason of this error?

This error is a result of a version mismatch. Environment variable which is referenced in the traceback (_PYSPARK_DRIVER_CALLBACK_HOST) has been removed during update Py4j dependency to 0.10.7 and backported to 2.3 branch in 2.3.1.

Considering version information:

I'm using PyCharm and MacOS, Python 3.6, Spark 2.3.1

it looks like you have 2.3.1 package installed, but SPARK_HOME points to an older (2.3.0 or earlier) installation.

key not found: _PYSPARK_DRIVER_CALLBACK_HOST, This error is a result of a version mismatch. Environment variable which is referenced in the traceback  Jupyter - key not found: _PYSPARK_DRIVER_CALLBACK_HOST. Ask Question How does your opponent verify you have not more than 4 of a particular card in your deck?

This resolution that I'm about to render also takes care of the "key not found: _PYSPARK_DRIVER_CALLBACK_HOST/Java Gateway/PySpark 2.3.1" error!! Add to your bashrc or /etc/environment or /etc/profile

export PYTHONPATH=$SPARK_HOME/python/:$PYTHONPATH
export PYTHONPATH=$SPARK_HOME/python/lib/py4j-0.8.2.1-src.zip:$PYTHONPATH

That should do the doobie right there. You may thank me in advance. #thumbsup :)

java.util.NoSuchElementException: key not found, thread Thread[main,5,main] java.util.NoSuchElementException: key not found: _PYSPARK_DRIVER_CALLBACK_HOST at scala.collection. Hello - i'm using PyCharm 2019, python 2.7.6, Apache Spark 2.2.0 for pyspark development, and running into issues when i try to run any spark code. Code : #! /bin/python import os import sys from pyspark.sql import SparkSession from pyspark import SparkConf, SparkContext import pandas as pd impor

the env var in .bash_profile or /etc/profile may not be accessed by your code ,put them in your code directly.

import os
import sys

os.environ['SPARK_HOME'] = "/opt/cloudera/parcels/SPARK2/lib/spark2"
os.environ['PYSPARK_SUBMIT_ARGS'] = "--master yarn pyspark-shell" 




sys.path.append(os.path.join(os.environ['SPARK_HOME'], "python"))
sys.path.append(os.path.join(os.environ['SPARK_HOME'], "python/lib/py4j-0.10.6-src.zip"))


try:
    from pyspark import SparkContext
    from pyspark.sql import SparkSession

    from pyspark import SparkConf

    print("success")

except ImportError as e:
    print("error importing spark modules", e)
    sys.exit(1)

key not found: _PYSPARK_DRIVER_CALLBACK_HOST, Google Groups allows you to create and participate in online forums and email-​based groups with a rich experience for community  NoSuchElementException: key not found: _PYSPARK_DRIVER_CALLBACK_HOST . Exception : Java gateway process exited before sending its port number from the other SO issues, it seems that it is related to version mismatch, question is how to resolve this

I have got the similar errors: java.util.NoSuchElementException: key not found: _PYSPARK_DRIVER_CALLBACK_HOST and Exception: Java gateway process exited before sending its port number

Running the command "export PYTHONPATH=$SPARK_HOME/python/:$PYTHONPATH" or setting this to .bashrc resolved the issue.

Please also check if the mapr credentails are setup.

Pycharm + Pyspark error, java.util.NoSuchElementException: key not found: _PYSPARK_DRIVER_CALLBACK_HOST . Exception: Java gateway process exited before  So the issue is when we push kernels with mismatch on py4j version it will raise the issue of va.util.NoSuchElementException: key not found: _PYSPARK_DRIVER_CALLBACK_HOST i succefully was able to connect the kernel to the yarn cluster but got another issue related:

Pyspark + PyCharm - java.util.NoSuchElementExcepti, Subject, [jira] [Comment Edited] (SPARK-22095) java.util.​NoSuchElementException: key not found: _PYSPARK_DRIVER_CALLBACK_HOST. We would like to show you a description here but the site won’t allow us.

[jira] [Comment Edited] (SPARK-22095) java.util , Subject, [jira] [Closed] (SPARK-22095) java.util.NoSuchElementException: key not found: _PYSPARK_DRIVER_CALLBACK_HOST. Date, Fri  We use cookies for various purposes including analytics. By continuing to use Pastebin, you agree to our use of cookies as described in the Cookies Policy. OK, I Understand

[jira] [Closed] (SPARK-22095) java.util.NoSuchElementException ,

Comments
  • thanks, after update my spark version to 2.3.1 it works fine.
  • Upgrading from 2.3 to 2.3.1 worked for me too. Thanks!
  • @user8371915 I'm using python3.5 Spark 2.1.0 and getting same error "java.util.NoSuchElementException: key not found: _PYSPARK_DRIVER_CALLBACK_HOST". # .bashrc export PYSPARK_PYTHON=/usr/bin/python3.5 export PYSPARK_DRIVER_PYTHON=/usr/bin/python3.5 export SPARK_HOME=/opt/spark-2.1.0-bin-hadoop2.7 export SCALA_HOME=/opt/scala-2.11.8 export HADOOP_HOME=/opt/hadoop-2.7.7 export PATH=$PATH:$JAVA_HOME/bin:$JRE_HOME/bin:$SCALA_HOME/bin:$SPARK_HOME/bin:$HADOOP_HOME/bin export PATH export PYTHONPATH=$SPARK_HOME/python/lib/py4j-0.10.4-src.zip:$PYTHONPATH Any ideas?
  • while your answer goes in the direction of the question, I do suggest you to write more in-code comments, explaining why the error appeared.